Conduit-mold.



T. DE LA MARE.

CONDUIT MOLD.

APPLICATION IILED SEPT.12,1913.

1,118,558, Patented Nov. 24, 1914.

Attorneys THOMLS DE LA MARE, OF 1OELE, UTAH.

Application flled September 12. 1913.

T 0 all whom it may conserva Be it knoWn that ,THOMAS DE LA Mana, a citizen of the United States, residing at Tooele, in the county of Tooele and State of Utah, have invented a new and useful Conduit-Mold, of which the following is a specification.

The present invention appertains ,generally to molds foi constructn conduits, pige lines, and the like, it bein t e objeot ot t e present invention to provi e a novel and improved apparatus for molding a continuous pipe or conduit within a trench.

Another object of the present invention is to provide a unique m0ld ocre, which may be contracted after the concrete has set thereover, so as to be readily WithdraWn 1orv a new operation.

With the oregoing and other objecte in view, which will appear as the description proceeds, the invention resides in the combination and arrangement 03 parts and in the details of construction hereinafer described and claimed, it being understood that changes in the preci se embodiment of the invention herein disclosed, can be made withinthe scope of What is clairned, without departing from the spirit of the invention.

'lhe invention has been illustratod in referred embodimente in the accompanm; draLwing, whereinz igure 1 18 an end view of the nmld, as in use, the cope being shown in stion. Fig. 2 is a longitudinal vertical section of the mold as in use. Fig. 3 is a fragmental perspective of the means for loeking the core' in ex anded condition. Fig. 4 is a sectional detaiFof a modified form ot ocre. V

In carrying out the present invention, reference being had in detail to the drawin'g, there is provided a core embodyinv a shoot motel sleeve 1 having its bottom sp it longitudinally from end to and, as at .92. The sleeve 1 may be of any suitable diameter and length, acoord' to the diameter of the conduit or pipe to e molded thereby, and according to the other ciroumstanaes. It is preferable that the sleeve 1 have a contractive tension, in order tlmt when it is free, the same will contract so as to bring the ed es together.

ilovel means are provided for :xpaadin and locking the sleeve or core in expan condition, and to this end, a pluralitv or series of bearings 3 are secured witifln the respective end portions of the sleeve or ocre,

Spectficanton 01 Lettern Patent.

Pntented Nov. 2%. W.

Beilal No. 730.551.

jeoting in the same direction and bifurcatflf l[he boite or stem 'fpi0jeet irvfia y :ron tliit end of the sleeveor c ore, Which will b termed the inner end, While the other and the sleeve will be termd the outer and. The outer end or bif1ircated portion of'th'liolt or stem 7 is defleted or bent an'gularly, as at 9,and a hand lever 10 is fulcrumed or piVoted to the an'gular end 9 ofthe stem"8. The lever 10 is preferably of TshaP, or haStheo ositely extending ea'i or lugs'l, one 'of vv 1ch is pivoted within the angular and or bifurcated portion 9. A draft1od 12 is disposed lon itudinally within the sleeve or cor l, an" has its inner end iv-' oted to the bifurCnted portion of the" O or stem 7, the rod 19 extendihg be'tween certain of the outer or forwa1d toggle levers 4, and having 'its outer or forward and tient ah larly, as at 13. The angular end 13 of the draft rod 19 is pivoted to the other dai or 1ug 11 of the lever 10.

' Ordinarily, when the lever 10 is so sw'ung, as' to permit the rod 12 to move'inwartlly{ the core or sleeve will be contracted, the hub riienibers 5 moving awa from each other to permit such action. owever, wheri" the lever 10 is swun to the position indicattd in F i'g. 2, it will e evident that the ars or la 11 in being sWung with th. lever, Will drixwthe rod 12 outwardly, and will force the outer or forwad hub member 5 inwardly, so' as to expand the sleeve, the lever 10 swinging into or slightly beyond dead center to look the sleeve in expanded position. It is thus evident that the sleeve may be readily oxpahded and locked in such condition, hy thelever 10, and that when the concrete has set or hardened about tlxsleeve' or ocre, the lever 10 may be releusd to permit the core to contract, wher'eby it may be readily extracted or withdrawn.

In connection with the improved rare, .there is emplo;ed a cope ebdding"a transversely aire ed plate or hood 14 coextensive in length with the core, and having the internal flange 15 at its outer or forward 

